<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<form method="post" action="/LoginDemo/login">
    用户名:<input type="text" name="username">
    密码:<input type="text" name="password">
    <input type="submit">
</form>
</body>
</html>